{"product_id":"astrolabe-f1382","title":"Astrolabe","description":"This astrolabe, dated AH929 (1522-23 AD), is signed by one Yusuf ibn Hajji al-Jilani, from Gilan, a region southwest of the Caspian Sea. It is in the tradition of those made 150-250 years earlier by four successive generations of the Kirmani family. Hajji al-Jilani is not known to have made any other instruments.\u003cbr\u003e\u003cbr\u003eThe throne is solid and triangular in shape. Engraved in the mater is a geographical gazetteer with the longitudes, latitudes and qiblas of 31 localities. The rete, with 26 star pointers, is a replacement from either Iran or India, possibly from the 18th century. There are four plates, which, instead of having a square notch at the bottom, are held in the mater by a small hole on the lower part of the meridian line which is fixed onto a knob protruding from the mater. Between them, the plates cover all even latitudes between 30├òÔòØ-40├òÔòØ inclusive and also 22├òÔòØ. On the back of the instrument in the upper-left quadrant is a shadow square, outside of which the maker has put his signature in a clear naskhi script: 'Made by Yusuf ibn Hajji al-Jilani in the year 929 Hijra, 892 Yazdigird'. The original peg and wedge for the alidade have been replaced with a modern nut and bolt.\u003cbr\u003eYusuf ibn Hajji al-Jilani","brand":"prodigi","offers":[{"title":"Fine art poster \/ XS: 25 x 20cm \/ none","offer_id":57007045837182,"sku":"GLOBAL-FAP-8X10","price":22.95,"currency_code":"GBP","in_stock":true},{"title":"Fine art poster \/ S: 30 x 25cm \/ none","offer_id":57007045869950,"sku":"GLOBAL-FAP-10X12","price":28.95,"currency_code":"GBP","in_stock":true},{"title":"Fine art poster \/ M: 50 x 40cm \/ none","offer_id":6811622211628,"sku":"GLOBAL-FAP-16X20","price":38.95,"currency_code":"GBP","in_stock":true},{"title":"Fine art poster \/ L: 75 x 60cm \/ none","offer_id":57007045902718,"sku":"GLOBAL-FAP-24X30","price":54.95,"currency_code":"GBP","in_stock":true},{"title":"Fine art poster \/ XL: 100 x 80cm \/ none","offer_id":57007045935486,"sku":"GLOBAL-FAP-32X40","price":69.95,"currency_code":"GBP","in_stock":true},{"title":"Fine art poster \/ XXL: 127 x 100cm \/ none","offer_id":57007045968254,"sku":"GLOBAL-FAP-40X50","price":82.95,"currency_code":"GBP","in_stock":true},{"title":"Framed picture \/ S: 36 x 28cm \/ none","offer_id":57007046001022,"sku":"MUS-CFPM-11X14","price":59.95,"currency_code":"GBP","in_stock":true},{"title":"Framed picture \/ M: 50 x 40cm \/ none","offer_id":6811622768684,"sku":"MUS-CFPM-16X20","price":79.95,"currency_code":"GBP","in_stock":true},{"title":"Framed picture \/ L: 80 x 60cm \/ none","offer_id":57007046033790,"sku":"MUS-CFPM-24X32","price":119.95,"currency_code":"GBP","in_stock":true},{"title":"Framed picture \/ XL: 100 x 75cm \/ none","offer_id":57007046066558,"sku":"MUS-CFPM-30X40","price":159.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Standard: 6 x 4in \/ Single","offer_id":57007046099326,"sku":"GLOBAL-POST-MOH-6X4","price":1.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Standard: 6 x 4in \/ 10-pack","offer_id":57007046132094,"sku":"GLOBAL-POST-MOH-6X4-10","price":14.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Standard: 6 x 4in \/ 20-pack","offer_id":57007046164862,"sku":"GLOBAL-POST-MOH-6X4-20","price":24.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Large: 7 x 5in \/ Single","offer_id":57007046197630,"sku":"GLOBAL-POST-MOH-7X5","price":2.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Large: 7 x 5in \/ 10-pack","offer_id":57007046230398,"sku":"GLOBAL-POST-MOH-7X5-10","price":19.95,"currency_code":"GBP","in_stock":true},{"title":"Postcard \/ Large: 7 x 5in \/ 20-pack","offer_id":57007046263166,"sku":"GLOBAL-POST-MOH-7X5-20","price":29.95,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Standard: 6 x 4in \/ Single","offer_id":57007046295934,"sku":"GLOBAL-GRE-MOH-6X4-BLA","price":2.5,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Standard: 6 x 4in \/ 10-pack","offer_id":57007046328702,"sku":"GLOBAL-GRE-MOH-6X4-BLA-10","price":15.95,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Standard: 6 x 4in \/ 20-pack","offer_id":57007046361470,"sku":"GLOBAL-GRE-MOH-6X4-BLA-20","price":26.95,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Large: 7 x 5in \/ Single","offer_id":57007046394238,"sku":"GLOBAL-GRE-MOH-7X5-BLA","price":3.5,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Large: 7 x 5in \/ 10-pack","offer_id":57007046427006,"sku":"GLOBAL-GRE-MOH-7X5-BLA-10","price":19.95,"currency_code":"GBP","in_stock":true},{"title":"Greetings card \/ Large: 7 x 5in \/ 20-pack","offer_id":57007046459774,"sku":"GLOBAL-GRE-MOH-7X5-BLA-20","price":33.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2785\/2654\/products\/f1382_c9ccfc91-2b40-485e-8dcd-34219ed9a4d1.jpg?v=1527599033","url":"https:\/\/prints.rmg.co.uk\/products\/astrolabe-f1382","provider":"Royal Museums Greenwich prints","version":"1.0","type":"link"}